Welcome
@FionaD63 from me also to this friendly and supportive forum. There is a wealth of shared experience of dementia to be found here so I am glad you have found us.
I am sorry to read of your Dad's diagnosis. It's tough for sure being sole carer, particularly you living a little distance away.
Do please have a good look around the various sections of the forum, ask any particular questions you may like to, as members here really do want to help.